Paper clamp for a copy holder



Feb. 9, 1960 E. H. BRAZEE PAPER CLAMP FOR A COPY HOLDER Original FiledNov. 2, 1951 4 Sheets-Sheet 1 Ear/ HBrazee ATTORNEY Feb. 9, 1960 E. H.BRAZEE 2,923,991

PAPER CLAMP FOR A COPY HOLDER Original Filed Nov. 2, 1951 4 Sheets-Sheet2 Earl H. Brazee INVENTOR ATTORNEY Feb. 9, 1960 E. H. BRAZEE PAPER CLAMPFOR A COPY HOLDER 4 Sheets-Sheet 3 Original Filed NOV. 2, 1951 E ar/ h.Brazee INV ENT OR ATTORNEY Feb. 9, 1960 E. H. BRAZEE PAPER CLAMP FOR ACOPY HOLDER Original Filed Nov. 2, 1951 Earl H Brazee INVENTOR UnitedStates; Patent F PAPER CLAMP FOR A COPY HOLDER Earl H. Brazee, Casper,Wyo.

Original application November 2, 1951, Serial No. 254,591, now PatentNo. 2,739,569, dated March 27, 1956. Divided and this applicationJanuary 13, 1956, Serial No. 562,367

2 Claims. (CI. 2466) This is a divisional application of my applicationSerial No. 254,591, filed November 2, 1951, Patent No. 2,739,569.

The present invention relates to improvements in a copy holder and hasfor an object the provision of a device of this kind which is capable ofholding various types and sizes of material to be copied by a typist ona typewriter, such as, shorthand notebooks, file and index cards andsheets, news copy and manuscript.

Another object of the present invention is to provide an improved copyholder which can be adjusted so that the material being copied can beadjusted with respect tothe light and the desired distance from thetypists eyes to suit each individual operator.

A further object of the present invention is to provide an improveddevice of this character which has a line guide capable of being set atany point along the face of the holder and adapted to be operated by atreadle device either by hand or foot power or directly by hand.

A still further object of the present invention is to provide animproved copy holder in which the amount of step by step movement of theline guide may be selectively controlled in accordance with the amountof space between adjacent lines of the material supported by the holderand being copied.

The present invention aims to provide an improved device of this kindwhich can be attached to and supported by various types and sizes ofdesks and tables.

The present invention also aims to provide an improved structure whichcomprises relatively few parts, is economical to manufacture, easy toset up and simple to operate.

With the foregoing and other objects in view, the invention will behereinafter more fully described and more particularly pointed out inthe appended claims.

In the drawings, in which the same parts are denoted by the samereference numerals throughout the several views,

Figure 1 is a side elevational view with parts broken away of theimproved device constructed in accordance with{ the present inventionand illustrated as applied to a des Figure 2 is a front elevational viewof the same,

Figure 3 is a sectional view taken on the line 3--3 of Figure 2,

Figure 3A is a view similar to Figure 3 and showing a modified form ofline guide and movable shelf,

Figure 4- is a sectional view taken on the line -i-4 of Figure 2,

Figure 5 is a side elevational view of a modified form of the invention,v

Figure 6415 a front elevational view of the same,

Figure-7 is a sectional view taken on the line 7-? of Figure 5,

Figure 8 is a sectional view taken on the line 8--'8 of Figure 6,

Figure 9 is a side elevational view of a support for the gear case whichis shown in vertical section,

2,923,991 Patented Feb. 9, 1960 Figure 10 is a side elevational view ofa modified form of support for the gear case.

Figure 11 is a front elevational view of the same showing the gear casein its raised inoperative position,

Figure 12 is a perspective view of the T handle for locking the clampingdevice in its inoperative position,

Figure 13 is an enlarged fragmentary sectional view of the T handle andthe adjacent end of the clamping device, and

Figure 14 is a sectional view taken on the line 14-14 of Figure 13.

Referring more particularly to the drawings, 10 indicates a base platewhich can be made of sheet metal, such as light weight alloy or othersuitable material. The size and shape of the base plate may be varied tomeet the required needs. A stationary or fixed shelf 11 extendsforwardly from the lower edge of the base plate 10 and is disposed atsubstantially right angles to the forward face of the base plate. Aflange 12 extends forwardly from the right hand edge of the base plateand at substantially right angles thereto and a guide member or flange13 projects forwardly from the left front edge of the base plateadjacent to and inwardly of the left hand edge of the base plate. Theflange 12 and the guide flange 13 extend throughout substantially theentire height of the base plate.

An auxiliary movable shelf generally indicated at 14 may be removablymounted on the flange 12. The shelf 14 has a substantially triangularlyshaped body portion 15, the upper edge of which is inclined downwardlyas indicated at 16 from the right hand edge of the shelf 14 towards theleft hand edge and the lower edge is substantially straight. Asupporting ledge 16a extends outwardly from the lower edge of theportion 15 and away from the front face of the base plate 10. Theportion 15 of the shelf 1-4 has at its right hand end a bearing part 17for engaging the inner face of the flange 12 of the base plate 10. Thefree end portion 18 of the shelf 14 extends across and beyond the edgeof the flange 12 and is bent rearwardly to form a wall 19 disposed inspaced parallel relation to the bearing part 17 and the flange 12. Thewall 19 has a screw threaded aperture for receiving a binding screw Aclamping device generally indicated at 21 may be mounted on the baseplate 10 adjacent the upper end thereof. The clamping device comprises ashaft 22, the

opposite end portions of which are rotatably supported by brackets 23and 23a which in turn are supported by the guide flange 13 and theflange 12. One end portion of the shaft 22 extends through an opening23b in the bracket 23a and outwardly of the flange 12 and receives a Thandle 2 1 by which the shaft may be locked against rotation. Adjacenteach end of the shaft and inwardly of the flange '12 and the guideflange 13 arms 25 extend downwardly and inwardly and have their lowerfree end portions connected to a clamping bar 26. A coil spring 27 hasone endsecured to a boss 23 on the guide flange 13 and its opposite endanchored to the adjacent arm 25 for urging the bar 26 into engagementwith the front face of the base plate It).

The handle 24 comprises a pair of half-sections each of which issubstantially T-shaped and has a head 24a and a shank 24b extending fromthe head. Each shank has a projection 24c extending outwardly therefromintermediate its ends and a substantially L-shaped groove 24d. Thegrooves of the shanks cooperate to provide a substantially square shapedsocket for receiving the' extended end portion of the shaft 22 which issubstantially square shaped as indicated at 22a. The portion 22a of theshaft may be round in cross section and the grooves 24d may be ofcorresponding shape. 'Each shank has a through hole 24:: adjacent itsfree end for receiv-' in each head 24a of the handle half-sections andthe.

opposite end convolutions of the spring may be secured as by welding orthe like to the bottom of the recesses.

The spring 24g retains the half-sections in assembled relation when thehandle has been withdrawn from the openings in the flange 12 and thebracket 23a and urges the shanks 24b into engagement with the squareshaped portion of the shaft and the holes 24a over the opposite endportions of the pin 2212 when the handle is inserted through theopenings in the flange 12 and bracket 23a. The wall of the opening 23bin the bracket 23a will serve as a fulcrum for the shanks under theaction of the spring which tends to urge the heads 24a apart. Thebracket 23a is provided with substantially diametrically oppositenotches 23c which communicate with the opening 23b for receiving theprojections 240 of the shanks.

In order to insert the upper edge portion of the material to be copiedbeneath the clamping bar 26, assuming that the handle 24 has beencompletely removed from the shaft 22, the typist will move the bar 26away from the base against the action of the spring. The handle 24 willthen be inserted through the openings in the flange 12 and the bracket23a until the free ends of the shanks 24b engage the ends of the pin22b. The operator will then exert pressure on the heads 24a to move themtowards one another against the action of the spring 24g to the dottedline position shown in Figure 13 of the drawings. This action will causethe free end portions of the shanks to spread apart as the intermediateportions of the shanks will rock on the wall of the opening in thebracket 23a and on the outer edge of the portion 22a of the shaft 22,the opening and the notches 230 being of sufficient radial size topermit said rocking movement and being shown in Figure 13 of thedrawings as exaggerated.

Further inward movement of the handle will bring the holes 242 intoalignment with the ends of the pin 22b. Release of the pressure on theheads 24a will permit the spring 24g to come into play to move the freeend portions of the shanks towards one another so that the holes 25::will receive the opposite ends of the pin 22b as shown in full lines ofFigure 13 of the drawings. The reception of the prciections 24c by thenotches 230 will prevent rotation of the handle and the connec tion ofthe shanks with the pin 2212 will prevent rotation of the clamping bar26 so that the bar 26 wi l be locked in its raised position and thetypist will. have both hands free to insert the material to be copiedunder the bar 26. Thereupon pressure noon the heads of the handle willdisengage the shanks from the pin and the handle may be withdrawn torelease the shaft so that the spring 27 will move the bar 26 intoclamping position upon the material to be copied.

A line guide generally indicated at 29 may be mounted on the base plate10 for step by step movement over the front face thereof and comprises ablock or plate 30 and a marker 31 which is pivotally mounted on theplate 30 by a pivot pin 32 which extends through aligned openings in aknuckle 33 and webs or ears 34 of the marker 31. The block 30 isprovided with an opening for loosely receiving therethrough a guide rod35. The. opposite ends of which are secured to the fixed shelf 11'. anda bearing plate 36 carried by the upper end portion. of the base plate10. The knuckle 33 of the block 30* frictionally engages the inner faceof the guide flange 13 and one end of a coil spring 37 which encirclesthe pivot. pin 32 is secured to the inner face of the guide flange 13 bywelding or the like. The opposite end of the coil. spring 37 is securedto the under face ofthe marker 31 by a rivet or the like. The coilspring 37 will normally urge the marker 31 towards the front face ofthebase.

4 plate 10 and will cooperate with the guide rod 35 and the knuckle 33to maintain the block 30 in position.

The block 30 is also provided with a through passageway for receivingtherethrough a spiral 39 which may be formed from a flat piece ofmaterial twisted to form a spiral. The lower end of the spiral 39 has adisk 40 secured thereto by welding or the like. A stem 41 is secured tothe disk 40 and extends downwardly through a suitable opening in theshelf 11 and has mounted on its lower free end a knob 42. The upper endof the spiral 39 has a disk 43 secured thereto as by welding or thelike, and a stub shaft 44 is secured to the disk 43 and extends upwardlythrough a suitable opening in the bearing plate 36. I a

The block 30 has a slot 45 formed in its forward face and whichcommunicates with the spiral 39. A pin 46 is pivotally mounted on apivot pin 47 which is supported by a pair of L-shaped brackets 48 whichare secured in any suitable manner to the forward face of the block 30.The pin 46 has a finger 49 which normally rides in the groove 50 of thespiral 39. The pin 46 has a handle 51 by which the pin 46 may be swungon its pivot 47 to move the finger 49 through the slot 45 and out ofengagement with the groove 50 of the spiral.

The copy holder may be operatively associated with the typewriter in anyappropriate manner desired and in Figures 1 through 3 there isillustrated one means for supporting the copy holder on a desk A or thelike. A standard 52 which may be of tubular formation and of sufficientlength to extend the desired distance above the desk top, for example,twelve inches to fourteen inches, has mounted thereon a double channeldevice generally indicated at 53.

The double channel device 53 comprises an inner channelmember 54 and anouter channel member 55. The inner channel member '54 has its openingfacing upwardly and the inner faces of the vertical sides of the member54 are secured as by welding or the like to the lower end portion of thestandard 52. The outer channel member 55 has its opening facingdownwardly and embraces the inner channel member 54 and is pivotallymounted thereon by a pivot element 56. The rear end portion of theconnecting web of the outer member 55 is slotted to accommodate thestandard 52.

A substantially U-shaped socket member 57 is mounted on the upper faceof the web of the member 55 for receiving the lower edge portion of therail 58 on the desk A. In order to move the outer member 55 upwardly toa position in which the socket member will receive the rail 58 a setscrew 59 is received by a screw threaded opening in the web of the innermember 54 and its inner end will engage the lower face of the web of theouter channel member 55 when the set screw is screwed upwardly to movethe channel member 55 to the position shown in Figure l of the drawings.

It will be noted from Figure l of the drawings that when the socketmember 57 is in its raised position there is sufiicient clearancebetween the upper edges of the vertical sides of the channel member 54and the lower face of the web of the channel member 55 to permit thechannel member 55 to swing down a suflicient distance to enable thesocket member 57 to clear the lower end of the rail when the set screw59 is screwed downwardly.

A clamping member generally indicated at 60 comprises a substantiallyflat horizontal plate 61 and a substantially flat vertical plate 62joined together and secured in any appropriate manner to a sleeve 63which embraces the standard 52. The sleeve 63 carries a pair of setscrews 64 for engaging thestandard to hold the clamping member 60 inadjusted position. A sleeve 65 embraces the standard 52 and is held inits adjusted position by a collar 66 and a binding screw 67 carried bythe collar. One end of a rear arm 68 is secured by welding or the liketo the sleeve 65 and a gusset 69 is secured to the sleeve 65 and the arm68. The other or assess:

g forward end of the arm 68 is hingedly connected to the rear endportion of a second or forward arm 70 by a bolt 71 and nut '72. borderto provide a large hinge surface a hinge plate 73 is secured by weldingor the like to each of the arms 68 and 70.

The forward end of the arm 70 is secured to a sleeve 74 which embraces apost 75 comprising a part of a supporting frame. The post is slidablyreceived by the sleeve 74 and is held in adjusted position therein by acollar 76 and set screw 77. The supporting frame includes a standard 78the upper end portion of which may be attached to or may be formedintegral with the up or end portion of the post 75. The standard 78extends downwardly and forwardly from its point of union with the post75 at an angle thereto.

A channel shaped bracket 79 has one side secured to the rear face of thebase plate 10 as by welding or the like and its other side has anopening for the reception of a locking pin 80. The web of the bracket 79has an aperture for receiving therethrough the standard 78 and thestandard 78 has an opening in its lower end portion for receiving thelocking pin 80 for locking the plate 10 to the standard 78. A bracket 81which may be of angle iron formation in cross section has its verticalleg secured to the rear face of the base plate adjacent its upper endand has an aperture in its horizontal leg for receiving therethrough thestandard 78.

While in the drawing the brackets 79 and 81 are attached to the baseplate 10 adjacent the right hand edge of the base plate so that the post75 and standard 78 are also disposed adjacent the right hand edge of thebase plate it is to be understood that the brackets 79 and 81 may besecured to the rear face of the base plate at points a little to theleft of the vertical center of the plate 10 looking at Figure 2 of thedrawings to compensate for the weight of the guide line.

In Figures 5 and 6 is shown a modified form of supporting means for thebase plate 10. A base 82 which is adapted to rest upon the upper surfaceof a desk or the like supports a pair of standards 83 which extendupwardly from the opposite end portions of the base adjacent the rearedge thereof. The standards 83 extend upwardly for a distancesubstantially equal to the height of the base plate 10.

A leg 84 is pivotally connected by a pivot pin 85 to each standard 83adjacent the upper ends thereof. Each leg 84 extends downwardly throughthe aperture in the brackets 79 and 81 and a locking pin 80 may be usedfor securing each leg 84 to the bracket 79.

Each leg 84 extends below the bracket 79 and has an arm 86 pivotallyconnected thereto by a pivot pin 87 adjacent the forward end of the arm.The rear end portion of each arm 86 has an elongated slot 88 formedtherein for riding on a clamping screw 89 threadedly received by eachstandard 83.

While two standards 83 and legs 84 have been illustrated, it is to beunderstood that one standard 83 and one leg 84 with its associated arm86 and clamping screw 89 will be sufficient to adequately support theholder.

Treadle operated means for rotating the spiral 39 are illustrated inFigures 5 through 9 of the drawings. A bevel gear 90 may be fixed to thestub shaft 44 and a shaft 91 is rotatably supported by brackets 92 and92a which in turn are supported by the base plate 10. A bevel gear 93 isfixed to one end of the shaft 91 and meshes with the gear 90 and a bevelgear 94 is fixed to the opposite end of the shaft 91. The bevel gear 94meshes with a bevel gear 95 fixed to one end of a shaft 96 which issupported by the bracket 92a.

The opposite end of the shaft 96 is connected in a conventional mannerto one end of a conventinal type flexible shaft 97. The shaft 97 extendsthrough and is supported by a loop 98 formed in the upper free endportion of an arm 99 which is joined to a clamping ring 100. Theclamping ring 100 encircles one of the standards 83 8 and is adjustablysecured thereto by a clamping, screw 101.

The flexible shaft 97 extends downwardly from the loop 98 and has itsopposite or lower end connected in a conventional manner to a shaft 102which is rotatably supported by the opposite side walls 103 of a gearcase 104. The flexible shaft may be detachably connected to the shafts96 and 102 by a sleeve having diametrically opposed open ended slotssecured to each end of the flexible shaft and a pin carried by each ofthe shafts 96 and 102. When in the assembled position the pin will bestraddled by the slots in the sleeve.

A pinion 105 is fixed to the shaft 102 and is engaged at times by teeth106 carried by a segmental shaped portion 107 of a teeth shifting lever108 which is pivotally supported by a pivot pin 109 on a main lever 110.The pinion 105 may be detachably secured to the shaft 102 by a set screw105a which extends through a suitable opening in a hub 105k of thepinion. The teeth on the pinion 105 and the teeth 106 maybe small and oftriangular shape.

The lever 110 is pivotally supported on a pivot pin 111 which is mountedin the side walls 103 of the gear case. The main lever 110 issubstantially U-shaped and has a rear wall 112 and side walls 113extending forwardly from the rear wall through an opening 114 in thefront wall 115 of the gear case. The lever 108 is received between theside walls 113 of the lever 110 and the portion 107 and teeth 106 extendabove the lever 110.

A bifurcated treadle 116 straddles the extended forward end portions ofthe levers 108 and 110 and is held thereon by a screw 117. Each leg ofthe treadle 116 has a vertically extending slot 118 therein forreceiving the ends of a pin 119 carried by the lever 108. The oppositeends of the pin 119 extend through a vertically extending slot 120formed in each side wall 113 of the lever 110. The slots 120 in thelever 110 are of less length than that of the slots 118 in the treadleand the bottoms of the slots 120 are higher than that of the slots 118.

A coil spring 121 may have one end anchored to the bottom 122 of thegear case by a staple 123 or the like and its opposite end secured by ascrew 124 or the like to the segmental portion 107 of the lever 108. Astop or abutment 125 is carried by the side walls 103 cf the gear caseand is disposed in the path of return movement of the levers 108 and 110under the influence of spring 121.

A regulator generally indicated at 126 is provided for adjusting thethrow of the lever 110 in accordance with the spacing between the linesof material being copied. The regulator comprises a clevis like portion127, a stem 128 and a knob 129. The clevis straddles the levers 108 and110 within the gear case 104 and has a pin 130 fixed thereto adjacentits lower end. The upper half portion of the clevis is provided with tworows of openings 131 and 132. The openings of each row are verticallyspaced and the openings of one row are vertically staggered with respectto the openings of the other row.

One of the side walls 103 of the gear case has two openings 133 and 134.The opening 133 is in registry with the uppermost opening of the row ofopenings 131 and the opening 134 is slightly above the uppermost openingof the row of openings 132 when the clevis is resting on the bottom ofthe gear case. A pin 135 is provided for selective engagement with oneof the openings 133 or 134 and one of the openings 131 or 132. The stem128 extends upwardly through an aperture in the top 136 of the gear caseand the knob 129 is disposed above the top of the gear case. A bar 137is carried by the side walls 103 of the gear case and engages the clevis127 to hold it in position.

While the gear case 104 is illustrated in Figure 6 of" the drawings asbeing positioned on the'base 82 at the right hand side thereof, it is tobe understood that the gear case 104 may be positioned on the left handside of the base 82 or at any other location convenient for the typist.As shown in Figure 9 of of the drawings, the gear case 104 may bemounted on a base 138 which may be positioned on the top of the desk.The gear case may be secured to the base 138 adjacent one side edgethereof and the remaining portion of the base 138 may be pushed underthe typewriter from one side thereof.

A bowed spring 139 is secured to the upper face of the base 138 adjacentthe opposite side edge thereof by rivets 140 or the like which extendthrough one end portion of the spring. From its point of attachment tothe base the spring extends towards the gear case 104 and terminatesshort of stop pegs 141 which are mounted on the upper face of the base138 in inwardly spaced relation to the adjacent side of the casing.

When the base 138 is slid under the typewriter from one side thereof thestop pegs 141 will contact the adjacent side of the typewriter andprevent further movement in that direction. As the base 138 is movedunder the typewriter the spring 139 will be depressed by the under faceof the side of the frame of the typewriter and when the pegs 141' engagethe side of the frame of the typewriter the spring will be free toreturn to its original bowed form and cooperate with the frame toprevent the accidental withdrawal of the base 138.

In Figures 10 and 11 is illustrated means for supporting the gear case104 from the lower rail 58 of the desk when it is desired to operate thetreadle 116 by foot. A plate 142 is provided for resting on the floorand to which the gear case may be secured in any suitable manner. Theplate 142 maybe bent upwardly to provide a flange 143 to which an arm144 is connected by a hinge 145 adjacent one end of the arm. Adjacentits opposite end the arm 144 is connected by a hinge 146 to a leg 147 ofa substantially U-shaped clamp generally indicated at 148.

The clamp 148 also comprises a second leg 149 which is joined to the leg147 by an end piece 150 and a clamping screw 151 received by a screwthreaded opening in the leg 149. A chain or cord 152 may have one endsecured to the flange '143 and its opposite end provided with an eye 153for detachable engagement with a hook 154 on the rail 58 for holding theplate 142 and gear case in the elevated inoperative position illustratedin Figure 11 of the drawings.

In the use of the device, assuming that the horizontal plate 61 and thesocket member 57 have been tightly clamped to the desk A, the operatorwill adjust the sleeve 65 on the standard 52 to roughly position thebase plate 10 at the proper height. The material to be copied by thetypist will then be placed upon the base plate 10 by inserting the upperedge portion thereof beneath the clamping bar 26. If the material fromwhich the typist is copying is of sufi'icient length it will rest uponthe fixed shelf 11 and willlie upon the base plate 10 and beneath themovable shelf 14 and the line guide 29. If, however, the material beingcopied is not of sufficient length to reach the fixed shelf 11, themovable shelf 14 will be moved along the flange 12 until the lower edgeof the material being copied rests upon the supporting legs 16a of themovable shelf 14. The binding screw 20 will then be tightened to holdthe movable shelf in position.

The finger 49 will be withdrawn from the groove 50 of the spiral 39 andthe marker 31 will be swung on its pivot 32 outwardly away from the baseplate 10. The line guide 29 will then be moved upwardly until the upperedge thereof is positioned immediately below the first line of thematerial to be copied. The finger 49 will then be moved into the groove50 of the spiral 39. When the first line of the material to be copiedhas been typed, the operator will turn the knob 42 to move the lineguide 29 downwardly until the upper edge of the marker 31 is positionedimmediatelybeneath the second line of the 8 material to be copied. Thisoperation will be repeated until the entire material has been typed.

The bar 26 will be moved from the base plate 10 and the material'to becopied pulled upwardly clear of the fixed shelf 14 and the line guide29. The copied page may now be turned and a fresh page exposed forcopying. The height of the base plate 10 and the material positionedthereon may be adjusted by means of the sleeve 74 and the collar 76.

The distance of the material to be copied from the eyes of the typistmay be varied by the sleeve 65 which is rotatable on the standard, thebolt 71 which pivotally connects the arms 68 and 70 and the sleeve 74which is rotatable on the post 75. The use of these adjustments may alsochange the angle of the base plate'10 with respect to the source oflight.

The treadle operated means for rotating the spiral 39 illustrated inFigures 5, 6 and 7 may also be used with the form of the invention shownin Figures 1 through 4. The initial depression, either by the hand orthe foot of the operator of the treadle 116, will cause the forward endportion of the lever 108 to be depressed by virtue of the upper edge ofthe slots 118 engaging the opposite ends of the pin 119. This will causethe lever 108 to pivot about its pivot pin 109 so that the segmentalportion 107 will be swung upwardly to bring the teeth 106 into mesh withthe teeth of the pinion 105. Further depression of the treadle 116 willcause the opposite ends of the pin 119 to engage the bottoms of theslots 120 in the lever 110 so that the lever 110 will be swung on itspivot pin 111 to move the segmental portion in a clockwise directionlooking at Figure 7 of the drawings to cause the rotation of the shaft102.

This movement of the shaft 102 will be transmitted to the spiral 39through the flexible shaft 97, the shaft 96 and the beveled gears 95,94, 93, 90. Upon release of the treadle 116, the spring 121 will returnthe levers 10S and 110 and the segmental portion 107 to theirinoperative positions. The abutment 125 will limit this return movementof the levers 108 and 110. The spring 121 will first move the segmentalportion 107 so that the teeth 106 thereof are disengaged from the teethof the pinion 105 and will subsequently move the lovers 108 and 110downwardly against the stop 125. With this movement and since the teeth106 and the teeth on the pinion 105 are of small triangular shape therewill be no retrograde movement of the shaft 102. If there is anyretrograde movement at all it will be negligible.

The rotation of the spiral will be translated into downwardly verticalmovement of the block 30 and the marker 31 through the finger 49 whichengages the groove 50 of the spiral. The distance through which the lineguide 29 is moved by the levers 108 and 110 may be controlled by theregulator 126. The maximum movement is obtained when the regulator isinthe position illustrated in Figure 7 of the drawings in which the pin isin its lowermost position and the pin is received by the uppermostopening 131 of the regulator and the opening 133 in the gear case 104.

The throw of the levers 108 and 110 may be lessened by moving the pin135 from the position shown in Figure 7 of the drawings and by raisingthe regulator by pulling upwardly on the knob 129 until one of theopenings 131 or 132 are in registry with the openings 133 or 134 in thegear case. This will cause the pin 130 to be brought closer to the loweredge of the lever 110 so that the downward movement of the levers willbe shortened. The pin 135 will then be inserted into the registeredopenings to lock the regulator in the preselected position. In this waythe line guide may be moved any desired number of line spaces.

The angle of the base plate 10 with respect to the eyes of the operatormay be adjusted by loosening the clamp screws 89 and moving the arms 86thereof to the desired position of the base plate 10. The clamp screwswill then be secured in the newly adjusted po'sition.

In Figure 3A of the drawings is illustrated another form of movableshelf indicated generally at 14a and line guide generally indicated at29a. The shelf 14a comprises a body portion 150 and a supporting ledge16b which extends outwardly from the lower edge of the portion 15a andaway from the front face of the base plate 10. The right hand free endportion of the shelf 14a is cut and bent rearwardly toprovide a wall 19awhich lies outwardly of and substantially parallel to the flange 12a.extending rearwardly from the right hand end of the base plate 10. Thewall 19a extends rearwal'dly beyond the rear edge of the flange 12a andhas a smooth bore opening 19b through its rearwardly extended portionthrough which projects a binding screw 20a. The inner end portion of thescrew 20:: is threadedly received by a screw threaded opening formed inthe leg 20b of a substantially L-shaped clamping plate 200.

When the shelf 140 has been moved to the desired position the head ofthe screw 20a will be moved into contact with the wall 19a and thenrotated while holding the clamping plate 200 against rotation until theleg 20b is brought into firm frictional engagement with the flange 12a.The shelf 144: will thus be held securely in its adjusted position.

The line guide 29a comprises a block 30a, a plate 30b and a marker 31awhich is similar to the marker 31. The plate 30b may be secured to theouter face of the block 39a by welding or the like and its inner endportion is rolled over forwardly upon itself to form a knuckle 33a whichisreceived by a cut away portion of the adjacent end of the marker anddisposed between ears 34a formed on the upper and lower edges of themarker by the cut away portion. A pivot pin 32a extends through alignedopenings in the knuckle and ears and its intermediate portion may besecured to the knuckle by welding or the like.

The block 300 has an opening for loosely receiving therethrough \theguide rod 35 or a hook may be formed on the block to engage the rod 35.A guide flange 13a projects forwardly from the left hand edge of thebase plate and the flange and the block are provided with cooperatinghooks 13b and 300 to act as guide in holding line guide on a level planeacross the face of the base plate 10.

The line guide is positioned forwardly of the movable shelf to preventany possible interference therebetween and the marker may be swungoutwardly on its pivot until it engages the lever 51. The marker may beremoved from the pivot pin by first raising the marker until the upperear clears the upper end of the pivot pin and then moving the markerdownwardly until the lower ear is disengaged from the lower end of thepivot pin.

It is obvious that various changes and modifications may be made in thedetails of construction and design of the above specifically describedembodiment of this invention Without departing from the spirit thereof,such changes and modifications being restricted only by the scope of thefollowing claims.

What I claim is:

l. A paper clamp for use with a copy holder having a base comprisingmeans adapted to be supported by said base for removably holdingmaterial to be copied upon said base and comprising a shaft, bracketsadapted to be supported by said base for rotatably supporting saidshaft, a clamping bar on said shaft and movable therewith, resilientmeans for normally urging said bar into frictional engagement with thematerial to be copied to hold it against said base, a handle slidablyand non-rotatably supported by one of said brackets, and cooperatingmeans on said handle, said one bracket and said shaft for retaining saidclamping bar out of engagement with the material to be copied comprisingprojections on said handle, there being notches in said one of saidbrackets for receiving said projections to hold the handle againstrotary movement, pins on said shaft and said handle having openingstherein for receiving said pins to lock the handle and shaft togetheragainst relative rotary movement, and resilient means carried by saidhandle for maintaining said openings over said pins.

2. A paper clamp as claimed in claim 1 wherein said shaft has asubstantially square shaped end portion, said handle comprises a pair ofT-shaped complemental members each of which includes a shank having anL-shaped groove cooperating with each other to provide a substantiallysquare shaped socket for receiving the substantially square shapedportion of the shaft, said openings are formed in said shanks.

References Cited in the file of this patent UNITED STATES PATENTS938,621 Wagoner Nov. 2, 1909 953,631 Mederdorp Mar. 29, 1910 1,336,834Golanke Apr. 13, 1920 1,884,639 Fensky et al Oct. 25, 1932 FOREIGNPATENTS 610,847 France June 19, 1926

